Improvement in feed-water regulators



G. HENRY.

Feed-Water Regulator.

N0.I64,559 Patentedlunel5,l875.

THE GRAPH C CO.PHOTO-LITH.39&41 PARK PLACEJLY.

UNITED STATES PATENT OFFICE.

GEORGE HENRY,OF LENNOXVILLE, CANADA.

IMPROVEMENT IN FEED-WATER REGULATORS.

Specification forming part of Letters Patent No. 164,559, dated June 15,1875; application filed May 11, 1875.

To all whom it may concern:

Be it known that I, GEORGE HENRY, of the village of Lennoxville, in thecounty of Compton, in the Province of Quebec, Dominion of Canada,manufacturer of watches, have invented Improvements on Regulators forFeed Apparatus of Steam-Boilers, of which the Following is aspecification:

The object of my invention is to obviate the danger to whichsteam-boilers are frequently exposed for the want of a proper supply offeed-water, by regulating the supply of steam from the boiler to thepump, by which it is fed, and thus insure the requisite quantity tomaintain it at the proper level in the boiler,

Reference being bad to the annexed drawings, where similar lettersindicate like parts, Figure 1 represents a sectional elevation of aregulator embodying my invention. Fig. 2 represents a cross-section ofvalve-chamber on line z c. Fig. 3 represents a modification of the same.

In the drawings, letter A represents a section of the side of aboiler,to which the regulator is attached by the pipes B and C. The regulatoritself consists of a chamber, 1), fixed in such a position that it willbe partially full of water when thewaterin the boiler is at its properheight, the pipe aii'ording a communication between them, andmaintaining it at the same level in both, containing a float, E,extending from the top of which is the spindle at, having on its upperextremity the valves 0 6. These valves fit steam-tight to thevalve-seats i i in the valve-chamber F.

The valve-chamber F is composed of an inner and outer casing,-having anannular space between, the branch 9 being connected to the centerchamber between the valveseats 75 i, and the annular space d isconnected to the center chamber above and below the'valve-seats M by theports a. The pipe B connects the valve-chamber F to the boiler A abovethe water-level, and keeps it supplied with steam, and the pipe Gr,through which the spindle a passes, also affords a communication betweenthe valve-chamber F and water-chamber D. The branch 9 connects to thepipe, by which the feed-pump is supplied with steam.

The operation of the regulator is as follows: The steam entering throughthe pipe B passes through the ports a, and fills the annular space (1and pipe G, but is prevented from entering the center of thevalve-chamber F and passing out through the branch 9 by the valves e c.In consequence of space d being connected by the ports a, above andbelow the valve-seats i i, it allows a free passage to the steam, whichthus exerts a pressure on the lower side of the bottom valve, as well ason the upper side of the top one, one force counteracting the other, andthus keeping the valves balanced, or nearly so.

As the water in the chamber D becomes lower, in conformity with thewater in the boiler, the float E sinks with it,- drawing down the valves0 c (by means of the spindle a) away from the valve-seats ii, and allowsthe steam to pass through, and thence through branch 1 to the pump. Thequantity of steam supplied to the pump, and consequently its speed, isregulated by the height of water in the chamber D. Thus, when the wateris low, the valves are full open, allowing sufficient steam to pass towork the pump to its full capacity, and as the water rises thevalvesclose, diminishing the supply of steam, until the water is at thehighest point desirable, when the valves are entirely closed, whichstopping the pump altogether, the supply of water to the boiler ceases,until its level again falls, when the pump is again set in motion. Bythis means it is impossible for the water to become either too high ortoo low, but is maintained at the proper level by its own action,without requiring any attention from the person in charge of the boiler.

' The modification shown in Fig. 3 has reference to the valve-chamber F,and consists simply in having a passage, (1, on one side only of thevalve, in place of the annular space (I, for the sake of economy in thelarger sizes, the passage being connected by ports in a similar mannerto the annular space.

What I claim as my invention is The water-chamber D, float E, stem at,and valves c e, in combination with the valvechamber F, havingsteam-passage d, communicating openly by pipe G with the waterchamber D,and provided with valve-seats i i and branch 9, all substantially as andfor the purpose specified.

GEORGE HENRY.

Witnesses:

E. G. OHAMOOK, D. THOMAS.

